Because the rooting reflex is linked to the search for food and comfort, its failure to integrate can lead to poor regulation of stress and anxiety, especially when sensory stimulation is directed at the face. In some cases, adults may engage in compulsive oral behaviors, such as chewing gum, objects, or fingernails.  

The asymmetrical tonic neck reflex can cause tension in the neck and shoulder area, which can lead to frequent migraines and neck pain. In adults, this can manifest as difficulty following lines when reading or clumsy handwriting with poor hand-eye coordination. The asymmetrical tonic neck reflex is linked to the development of the frontal lobe, which is responsible for executive functions such as attention and concentration. If this reflex persists, it can lead to difficulty concentrating on complex tasks, organizing thoughts, and paying attention for long periods of time. Bilateral movements (involving both sides of the body) such as running, swimming, or even typing on a computer may become more difficult to perform smoothly and in sync.

People with an unintegrated glabellar reflex may experience hypersensitivity in the forehead and eyes. This can make activities such as applying makeup, washing their face, or even wearing glasses uncomfortable. If the glabellar reflex persists, excessive blinking may occur when the forehead is touched or even in response to simple stimuli, such as light or other visual or light tactile stimulation. This can be distracting in social interactions and daily activities.

An unintegrated plantar reflex in adults may indicate underlying neurological disorders, such as central nervous system damage. Symptoms include coordination problems, walking problems, foot pain, and plantar hypersensitivity.

Beyond physical symptoms, unintegrated archaic reflexes can have a significant impact on emotional management and our social relationships. Not being able to do as others do, either through incapacity or uncontrollable reactions, can affect our self-confidence, make us feel different or inadequate, and lead to socially awkward situations. 

For example, an individual with a persistent Moro reflex may feel constantly on alert, which can make social interactions more complicated. This hypervigilance can lead to escape and avoidance behaviors, or difficulty handling conflicts calmly and rationally. Affected adults may also be more prone to disproportionate emotional responses, feel overwhelmed more easily, and have difficulty handling stressful situations calmly.